Pipe-wrench.



1 No 709,064. Patehted Sept. 16, I902. E. A. WARE.

PIPE WRENCH.

(Application filed June 12, 1901.)

(No Model.)

WITNESSES: ,M b

a BY H UNITED STATES ATENT OFFICE.

ERASTUS A. WARE, OF NOANK, CONNECTICUT, ASSIGNOR OE, ONE-HALF TO MICHAEL B. MCDONALD, OE NOANK, CONNECTICUT.

PIPE-WRENCH.

SPECIFICATION forming part Of Letters Patent N0. 709,064, dated September 16, 1902. Application filed June 12, 1901- Serial No. 64,252. (No model.)

T on whom it may OOILOQWM riphery 6 are merged together in a curved Be itknownthatI, ERASTUSA.WARE,acitishoulder 13, which constitutes an inoperazen of the United States, residingat Noank,in tive portion of the periphery 6. the county of New London and State of Con- It is manifest from the above that as the necticut, have invented certain new and userotary jaw 5 is rotated in the direction defulimprovementsin Pipe-Wrenches,ofwhich noted by the arrow in Fig. 1 the space hethe following is a specification. tween the jaws 3 and 5 will be gradually di- This invention relates to pipe-wrenches; minished up to a point in the rotation of the and it has for its object to provide an imjaw 5 at which the point 12 of the periphery 10 proved device of thisclass which will be su- 6 is in the closest possible proximity to the perior in point of facility of adaptation to jaw 3. pipes or other work of varying dimensions and The side pieces 9 of the shank or body porwhich will be positive in operation, inexpention 2 may be provided with a plurality of sive in construction, and generally superior perforations 14:, arranged in longitudinal sex5 in point of efficiency and serviceability. ries to receive the bearing-pin 8 in any de- 6 In the drawings, Figure 1 is a side view of sired position with respect to the fixed jaw 3, a pipe-wrench constructed according to my and thus regulate the working relation beinvention. Fig. 2 is a transverse sectional tween the jaws 3 and 5. view of the same, taken upon the line was, The operation and advantages of my im- 20 Fig. 1. Fig. 3 is a front edge View of the proved pipe-wrench will be readily underwrench. stood. The device is manipulated in the Corresponding parts in all the figures are customary manner; but in fitting the wrench denoted by the same reference characters. to the work the fixed jaw 3 is first broughtto Referring to the drawings, 1 designates my bear upon the same, and the rotary jaw 5 is 25 improved wrench, which comprises a body then turned until its peripheryG bears operportion or shank 2, provided at one end with atively upon the work. The handle portion a fixed jaw 3 and at the other end with a at is then operated in the customarymanner, handle portion 4 and a rotary jaw 5, arranged and the operative surfaces 7 and 6 of the jaws intermediate of the handle portion and the 3 and 5 respectively grip the work positively o fixed jaw. The rotary jaw 5 is adapted to and cause its rotation, said operative sur- 8o occupy a fixed operative position, but emfacesbeingpreferablytoothed ortransversely bodies a cam-shaped operative edge portion serrated in the customary manner. The opor periphery 6, between which and the curved erative surfaces of the jaws 3 and 5 may thus inner operative face 7 of the fixed jaw 3 the be relatively gaged or adjusted to fit the 5 pipe is gripped. In the preferred form of con: varying dimensions of work by merely rotatstruction the rotary jaw 5 is mounted upon a ing the jaw 5an operation both simple and transverse bearing-pin8,which passesthrough saving of time and inconvenience. The r0- the shank or body portion 2, which consists tary jaw 5 may be adjusted bodily along the of two parallel side pieces 9, between which body portion or shank 2 by shifting the bear- 0 the rotary jaw5is arranged. In forming the ing-pin 8 along the series of perforations 14, 9o rotary jaw 5 a fiat plate 10 of suitable metal formed in the side pieces 9. The cam-shaped is provided, and the edge portion of periphrotary jaw may thus adapt the wrench to all cry 6 of said plate is so curved, beginning at diameters of work customarily met with. It a predetermined point, as at 11, that each is manifest that the wrench may also he sat- 5 successive portion of the periphery 6 is farisfactorily applied to other classes of work 5 ther from the point through which the bearthan those described, in which its method of ing-pin 8 passes, continuing to a point, as at use will be substantially the same.

12, approximately in line with the point 11 I do not desire to be understood as limiting and the point through which the bearing-pin myself to the details of construction and ar- 5o 8 passes. The points 11 and 12 of the perangementashereindescribedandillustrated, 10o

as it is manifest that variations and modifications may be made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variation and modification as properly fall within the scope of my invention and the terms of the following claims. c

Having thus described my invention, I

claim and desire to secure by Letters Patent 1. A device of the class described, comprising a body portion provided at one end with a handle and adjacent to the other end with a transverse curved recess the outer porwith a serrated periphery which is so curved from a predetermined point that it constantly recedes from the bearing-pin until a point is reached approximately in line with the starting-point and the bearing-pin, the periphery between the initial and terminal points forming an inwardly-curved smooth shoulder.

2. A device of the class described, comprising a body portion embodying two parallel side pieces provided near one end with a transverse recess on one side the outer end portion of which forms a hooked serrated jaw and at the other end secured to a portion inserted between such side pieces to form a handle, and a rotary jaw eccentrically mounted between such side pieces intermediate the hooked jaw and the handle, and provided with a serrated periphery which is so curved from a predetermined point that it constantly recedes from the bearing-pin until a point is reached approximately in line with the starting-point and the bearing-pin, the periphery between the initial and terminal points forming an inwardly-curved smooth shoulder.

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

ERAS'IUS A. WARE. t

Witnesses:

E. A. CARD, EVIE RANDALL. 

